The high performance Model 5417R spins up to 25,000 x g for quick and efficient pelletization. This model offer unsurpassed safety, reliability, and ease of use. Refrigerated Model 5417R features CFC-free cooling in a compact, front-to-back design that saves valuable bench space and can accommodate a variety of microcentrifuge rotors to extend application range. 30-place capacity. Compact footprint, less than 13 inches wide. Variable-speed, brushless motor for maintenance-free operation. Speed setting and display in either rpm or RCF increments.